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NYC Transit solves frog problems with redesign: Frog problems not only caused accelerated wear,...

In New York City, where millions of people count on the subway 24 hours a day, seven days a week, dramatically-reduced service life for frogs accompanied by serious noise and vibration problems resulted in a Big Apple-sized headache for New York City Transit s track maintenance people.

Word began to come back that shortly after field installation of new frogs, severe "dish" formations began appearing on RBM frog points and wheel risers showed excessive wear. The resulting noise level was high enough so that customers started complaining.

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